Number of (1+1)X(n+1) 0..3 arrays x(i,j) with row sums sum{x(i,j), j=1..n+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..1+1} nondecreasing.

A233354

Number of (1+1)X(n+1) 0..3 arrays x(i,j) with row sums sum{x(i,j), j=1..n+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..1+1} nondecreasing.

Terms

    a(0) =80a(1) =464a(2) =2164a(3) =8538a(4) =29595a(5) =92282a(6) =263644a(7) =699320a(8) =1740458a(9) =4097792a(10) =9188746a(11) =19731680a(12) =40763534a(13) =81331302a(14) =157237899a(15) =295394220a(16) =540582720a(17) =965763678a(18) =1687521769a(19) =2888837286a(20) =4852183110a(21) =8006958320a(22) =12996640502a(23) =20772709470

External references